The ability all women have to force their will upon men. With these powers, women are able to get free drinks, convince men to watch "The Notebook", and other various nefarious things. It is believed that this power stems from the uterus.

Man 1: "Sorry, dude, can't go out tonight. The girlfriend and I are staying in to watch Dancing with the Stars"
Man 2: "She used her uterus powers on you, huh?"
Man 1: "... yeah"